u need a wrench or a spark plug socket and maybe an extension.......remove the spark plug wire n start unscrewing the spark plug.....when u install new spark plugs make sure it is gapped to proper specifications,......u can look on the sticker under the hood, install same way u took it off, real easy
on the 2005 and later Ford focuses they have coil over, there for- you have to unscrew the bolt holding the coil down, once that bolt is removed, you simply just pull the whole unit up and out, once out you remove the spark plug as u normally would probably with a 6" extension, and the appropriate spark plug socket. and just reverse the process, there quite easy to do.
How to change the spark plugs
It is moderately easy to change the spark plugs on a Liberty, although it is rather tricky because of the gap between the spark plugs.
Sell it !!!
Wires and plugs constitute a tune-up. DO NOT gap the plugs, it will ruin the platinum coating.
Spark plugs and wires
Changing spark plugs is relatively easy. Disconnect the batter and spark plug cables, and remove the old spark plugs. Next replace the spark plugs with new ones, reconnect the spark plug cables and battery.
Have a look at ; www.carbasics.co.uk
This is for the '05 Frontier, but should be what you're looking for. http://www.clubfrontier.org/forums/f23/how-change-spark-plugs-2005-gen-2-frontier-40507/
Disconnect the battery, remove the spark plug cables and boot, and remove the old spark plugs. Put in the new spark plugs, attach the cables and boots, and connect the battery.
usually every 100000
To change the spark plugs in a 2005 Dodge Stratus, first, ensure the engine is cool and disconnect the negative battery cable. Remove the ignition coil or spark plug wire from each spark plug, then use a spark plug socket and ratchet to unscrew and remove the old plugs. Install the new spark plugs by hand to avoid cross-threading, then tighten them to the manufacturer’s recommended torque. Reconnect the ignition coils or spark plug wires and restore the battery connection.
To change the spark plugs in a 2005 Mitsubishi Lancer, first, ensure the engine is cool and disconnect the negative battery terminal. Remove the ignition coil or spark plug wires by gently pulling them off the spark plugs. Use a ratchet and spark plug socket to carefully unscrew the old spark plugs, then install the new ones by hand to avoid cross-threading. Finally, reconnect the ignition coils or wires and the battery terminal.